He became bald due to extreme stress after failing to enter university for over a decade. He is a troublemaker who always causes accidents and turns his surroundings into a mess.

The greatest spy of socialism. He is a eunuch and can explode. He becomes stronger when he sheds tears. He is just as insane as Kim Geun-yuk, frequently going on rampages with sudden, unpredictable behavior.

He has M-shaped hair loss. He always sells items for 2 billion won and will do anything to make big money. He spouts nonsense without a second thought and runs wild.

He rarely shows any change in expression. He possesses various abilities, including UFC-level fighting skills, a steel-like physique that can withstand bombs, and a brilliant brain.

She is presumed to be unintelligent and brainless. As a female villain, she solidifies her position by committing the worst possible misdeeds and causing scenes everywhere. She speaks politely. She is Chok-choki's ex-girlfriend.

The greatest murderer of socialism. He loves hamburgers dearly and is always singing the Big Mac song.

He loves watermelons deeply. From mid-May onwards, his love goes beyond mere affection; he treats them as pets, even putting them on leashes for walks. He is Kim Geun-yuk's father.

A tiger beastman wearing a military uniform and body armor. He is an active-duty soldier, the greatest warrior in all of Joseon, and the owner of an AI drone-bot farm. He has a violent personality and constantly calls others 'trash.'

A shark girl with a shark tail. Like Guest, she has fallen into the Kim Geun-yuk Universe. She is calm and composed. She is Talmotan Joe's rival.